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Crowcon IRmax | IR Hydrocarbon Gas Detector | T90 <4 s, <1 W, 158x75x57mm
The Crowcon IRmax in its detector-only form measures 158 x 75 x 57 mm and weighs 1.58 kg, giving fail-safe infrared detection of methane, butane, propane and other hydrocarbons. It uses under 1 W because its optics are not heated; Stay-ClIR coating stops condensation instead. The 4-20 mA output suits nearly any control system, with Modbus and HART as options.
Key features
- Stay-ClIR coated optics prevent condensation faults
- Under 1 W power, so small supplies and battery back-up suffice
- Wall, 50 mm pipe or junction box mounting
- 2 mA dirty-optics warning and 0 mA fault signal
- Annual proof-test interval; SIL 2 validated
- Specifications
- Downloads
| Part Number | IRmax |
| Brand | Crowcon |
| Configuration | IRmax |
| Size | 158 x 75 x 57 mm |
| Weight | 1.58 kg |
| Gases | Methane, butane, propane and other hydrocarbons |
| Enclosure | 316 stainless steel |
| Ingress protection | IP66 |
| Power | 12-30 Vdc, <1 W |
| Output | 4-20 mA sink/source; RS-485 Modbus and HART 7 optional |
| Operating temperature | -40 to +75 °C |
| Response time | T90 <4 s |
| Functional safety | IEC 61508, EN 50402 SIL 2 |
| Approvals | Ex II 2 GD Exd IIC T6 Gb (-40 to +50 °C), T4 (-40 to +75 °C); Ex tb IIIC T135°C Db |
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